Just recently My 04 Tahoe LT radiator decided to spring a leak at 215k. I replaced it with an OEM unit from AutoZone. I did the E-fan upgrade using an Escalade fan which does a great job.
If I put it in Drive or 3rd gear when it shifts on its own 2-3 shift just acts like neutral. I know what it's like when the 3-4 clutch goes out as I've had that happen while driving with the original transmission. This one was still running strong until I came to a stop which is really strange...
I was driving my 2004 Tahoe LT 5.3 with 4L60E on a 400 mile round trip. On the way home I was cruising at 80 mph with no issues. About 30 miles from home I had to come to a stop and then proceeded. After that it would not shift into 3rd or 4th gear. I had to put it in 2nd gear and limp the rest...
Check to make sure you have the 30 amp fuse in the fuse box in the engine compartment for the power pin on the 7 pin connector. I discovered that my Tahoe didn't come with one installed when I found my inside trailer lights didn't work.
Let me ask you this... Did you buy your truck from a Buy here pay here dealer? If so look for the GPS tracker and the kill switch they install along with it. I had one on my Tahoe that killed my battery every 3 days if I wasn't driving it. If the kill switch was wired in incorrectly it will...
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